Next To Cellulosic Patents (Class 428/464)
-
Patent number: 4781978Abstract: Article comprising a substrate bearing an optically clear, non-crosslinked coating formed from a blend comprising at least one polymer containing carbonylamido functional groups and at least one hydrophobic polymer substantially free of acidic functional groups.The coating is useful for promoting adhesion, increasing the hydrophilicity of the surface of the article, and increasing receptivity of the substrate for aqueous based inks.Type: GrantFiled: March 2, 1987Date of Patent: November 1, 1988Assignee: Minnesota Mining and Manufacturing CompanyInventor: Daniel C. Duan
-
Patent number: 4777081Abstract: A biaxially oriented transfer metallizing film based on polypropylene, and process therefor. The film is a three-layer film produced by coextrusion and having a base layer of a propylene homopolymer and top layers applied to the two surfaces thereof. The base layer contains an additive depot of migrating monomers in an amount of 0.01 to 2.0 percent by weight, relative to the weight of the polymer constituting the base layer. The top layers are polypropylene that has a lower viscosity than the polypropylene of the base layer.Type: GrantFiled: September 12, 1985Date of Patent: October 11, 1988Assignee: Hoechst AktiengesellschaftInventors: Guenther Crass, Klaus Paschke, Lothar Bothe
-
Patent number: 4752526Abstract: A metal-polypropylene laminate composite comprising a polypropylene sheet made of a blend of a modified polypropylene prepared by modifying a crystalline polypropylene with an unsaturated carboxylic acid or its derivatives or a crystalline polypropylene containing such a modified polypropylene, with 15 to 50 wt. % of waste paper, organic fibers or wood pulp and metal plates superposed on and bonded by hot forming to both the surfaces of said polypropylene sheet is provided.It is of light weight and useful in acoustically sound absorption, vibration damping and heat insulation purpose.Type: GrantFiled: March 12, 1987Date of Patent: June 21, 1988Assignee: Chisso CorporationInventors: Takashi Daimon, Hideshi Sakamoto, Tatsuya Adachi
-
Patent number: 4749625Abstract: An amorphous metal laminate sheet having an excellent electromagnetic wave-shielding effect including a core layer containing at least one amorphous metal sheet layer which may be plated with an electroconductive metal, at least one flexible polymeric coating layer laminated on at least one surface of the amorphous metal-coating core layer, and optionally, at least one reinforcing fibrous fabric layer.Type: GrantFiled: March 16, 1987Date of Patent: June 7, 1988Assignee: Hiraoka & Co., Ltd.Inventors: Tsutomu Obayashi, Saburo Baba, Manabu Imoto, Shinobu Watanabe
-
Patent number: 4740402Abstract: A sealed container material having a deoxidation function comprises a metallic base material reactive with oxygen and a hydrophilic coating layer of water-soluble polymer such as hydroxyethyl cellulose formed on the surface of the metallic base material. An oxygen- and moisture-permeable coating layer composed of a silicone resin or an olefin resin may further be provided on the hydrophilic coating layer. The material exhibits an excellent oxygen absorbing ability and is thus suited as a material for sealed containers, such as cans, bottles, capsules, etc., for encasing food, drink, chemicals, and medical drugs and storing them over a long period of time without denaturation or deterioration.Type: GrantFiled: November 7, 1986Date of Patent: April 26, 1988Assignees: Nippon Steel Corporation, Suntory Limited, Kansai Paint Co., Ltd.Inventors: Shigeyoshi Maeda, Tsunetoshi Asai, Hidejiro Asano, Haruyoshi Taguchi
-
Patent number: 4693396Abstract: There is disclosed a substrate of layers of materials comprising fluorinated polyethylene layers having sandwiched therein between a metal foil layer and a paper layer all suitably adhered to one another. It is also contemplated that the substrate be employed in fabricating a dentifrice tube.Type: GrantFiled: September 2, 1986Date of Patent: September 15, 1987Assignee: Colgate-Palmolive CompanyInventors: Edward A. Tavss, Samuel Temin, John Santalucia, Davis L. Carroll
-
Patent number: 4693395Abstract: There is disclosed a substrate of layers of materials comprising ethylene propylene copolymer layers having sandwiched therein between a metal foil layer and a paper layer all suitably adhered to one another. It is also contemplated that the substrate be employed in fabricating a dentifrice tube.Type: GrantFiled: September 2, 1986Date of Patent: September 15, 1987Assignee: Colgate-Palmolive CompanyInventors: Edward A. Tavss, John Santalucia, David L. Carroll
-
Patent number: 4687698Abstract: An improved makeready packing for preventing corrosion of cylinders of offset or lithographic printing presses which comprises providing a cylinder surface contacting packing element having a corrosion inhibitor applied thereto in such a manner that the inhibitor will effectively protect the entire surface of the cylinder.Type: GrantFiled: December 24, 1984Date of Patent: August 18, 1987Assignee: The Cromwell Paper CompanyInventors: David M. Weil, Burton E. Lieberman, Ronald F. Adams
-
Patent number: 4684429Abstract: A method is disclosed for producing a photoengravable, laminated printing plate including the steps of applying a homogeneous adhesive free of noncompressible materials between mating sheets of magnesium and steel and then placing the mated sheets into a press to compress the mated sheets until the adhesive is uniformly dispersed therebetween.Type: GrantFiled: June 19, 1984Date of Patent: August 4, 1987Inventor: Edward L. Dalton, Jr.
-
Patent number: 4675235Abstract: Laminated synthetic mica articles are disclosed that have particular applicability as substrates in electronic components. The articles comprise a core of stacked and consolidated, synthetic mica sheets that are impregnated with resin, and a copper foil sealed to a face on the article. Adherence of the copper foil is enhanced by use of a micaceous facing layer and bonding sheet, both being resin-impregnated and the resin cure being advanced beyond the normal B-stage level before assembly. Insulation resistance is enhanced by providing an advanced resin coating on the copper foil before assembly. Use of a bismaleimide triazine and epoxy mixed resin is also disclosed whereby a transformation temperature (Tg) of about 200.degree. C. is obtained.Type: GrantFiled: January 9, 1986Date of Patent: June 23, 1987Assignee: Corning Glass WorksInventor: Shy-Hsien Wu
-
Patent number: 4651756Abstract: A method of applying metal foil embellishment to cigarette paper or tipping paper comprises pressing foil against tipping using a heated former of a configuration corresponding to that of the desired embellishment. The method, which is preferably carried out on a filter tip assembly machine, may result in a depression in the tipping, in which case it is advantageous for the tipping to comprise a thermoplastic material.Type: GrantFiled: July 19, 1984Date of Patent: March 24, 1987Assignee: British-American Tobacco Company LimitedInventors: John A. Luke, John F. McCreadie
-
Patent number: 4643936Abstract: A backup material for small bore drilling in hard crystalline materials, such as multilayer circuit boards containing polyimide/glass, polyimide kevlar or modified epoxy BT/glass, includes at least one layer of hard crystalline material. Standard LCOA material with an additional layer selected from the group comprising polyimides, fluorocarbons and high temperature polycarbonates has proven successful.Type: GrantFiled: February 14, 1986Date of Patent: February 17, 1987Assignee: Control Data CorporationInventor: Russell C. Eidal
-
Patent number: 4626459Abstract: A mounting structure for a flat, narrow, metallic strip for mounting the strip on a sheet of paper which includes a piece of paper to which the metallic strip is adhered by an adhesive carried on one surface of the adhesive. The piece of paper is dimensioned to provide a border with adhesive that extends about the periphery of the metallic strip. The structure can be stored on Kraft paper to which adhesive does not permanently adhere.Type: GrantFiled: September 9, 1986Date of Patent: December 2, 1986Assignee: Minnesota Mining and Manufacturing CompanyInventor: Nicholas Warhol
-
Patent number: 4610906Abstract: A carpet joining tape comprises two strips of metal foil (13, 16) which overlie each other and are separated by an electrically insulating material (14), such as a paper strip. The superimposed metal foil strips (13, 16) and interposed electrical insulating material (14) are secured together so that an electric current can be passed through both strips (13, 16) in series to resistively heat the strips (13, 16) so as to melt a heat softenable, carpet bonding adhesive (19). The metal foil strips (13, 16) and electrical insulating material (14) may be secured together and to a base insulating strip (11) beneath the lower foil strip (13) and to reinforcing material (18) on the upper metal foil strip (16) by lines of stitching (21), and a layer of carpet bonding, heat softenable adhesive material (19) is disposed on the upper surface of the upper metal foil strip (16) and reinforcing material (18).Type: GrantFiled: December 26, 1984Date of Patent: September 9, 1986Assignee: Brooks Electrofoil Seaming Systems Pty. Ltd.Inventor: Ronald H. Brooks
-
Patent number: 4608285Abstract: There is disclosed a substrate of layers of materials comprising acetal polymer layers having sandwiched therein between a metal foil layer and a paper layer all suitably adhered to one another. It is also contemplated that the substrate be employed in fabricating a dentifrice tube.Type: GrantFiled: December 29, 1983Date of Patent: August 26, 1986Assignee: Colgate-Palmolive CompanyInventors: Edward A. Tavss, David L. Carroll
-
Patent number: 4595613Abstract: There is disclosed a substrate of layers of materials comprising fluoropolymer layers having sandwiched therein between a metal foil layer and a paper layer all suitably adhered to one another. It is also contemplated that the substrate be employed in fabricating a dentifrice tube.Type: GrantFiled: May 31, 1985Date of Patent: June 17, 1986Assignee: Colgate-Palmolive CompanyInventors: Edward A. Tavss, Samuel C. Temin
-
Patent number: 4595612Abstract: There is disclosed a substrate of layers of materials comprising polyester layers having sandwiched therein between a metal foil layer and a paper layer all suitably adhered to one another. It is also contemplated that the substrate be employed in fabricating a dentifrice tube.Type: GrantFiled: May 30, 1985Date of Patent: June 17, 1986Assignee: Colgate-Palmolive CompanyInventors: Edward A. Tavss, Samuel C. Temin
-
Patent number: 4590265Abstract: The present invention provides a novel cellulosic material and a process for preparing the same. The cellulosic material is a carboxylated cellulose ester material having an acid number of at least about 5, an inherent viscosity of from about 0.01 to about 1.00 and wherein the anhydroglucose units thereof have ring substituents comprising by weight based on total polymer weight, of from about 0.05 to about 20% hydroxyl groups, from about 0.5 to about 44% acetyl groups, from 0 to about 54% butyryl groups, from 0 to about 47% propionyl groups, from about 0.4 to about 4.0% total carboxyl groups wherein from about 20% to about 100% of these carboxyl groups are non-saponifiable backbone, and wherein the material has a lactone level of from about 4.52.times.10.sup.-5 to about 6.13.times.10.sup.-4. The carboxylated cellulose esters of the present invention are prepared by reacting a cellulose ester with ozone at a temperature of about 25.degree. to 80.degree. C.Type: GrantFiled: April 18, 1985Date of Patent: May 20, 1986Assignee: Eastman Kodak CompanyInventors: Richard T. Bogan, Chung-Ming Kuo
-
Patent number: 4585691Abstract: A friction material obtained by flame spraying a metal which can be a sacrificial anode for iron on the surface of a friction material substrate in an amount of 0.5 to 8.0 mg/cm.sup.2 shows excellent resistance to judder and excellent rust prevention.Type: GrantFiled: November 4, 1982Date of Patent: April 29, 1986Assignees: Hitachi Chemical Co., Ltd., Nissan Motor Co., Ltd., Atusgi Motor Parts Co., Ltd.Inventors: Akira Nishimura, Kazuaki Kawasaki, Yasuo Nakano, Hiromichi Horie, Hiroshi Ushiyama, Mikio Manabe, Hikaru Maeyama, Saburo Abe, Masakazu Tambara, Yuji Takahashi, Yasuo Katagiri
-
Patent number: 4584223Abstract: The panel has a light, generally rigid cardboard or foamed cork core to opposite sides of which are laminated two, thin sheets of steel foil ranging from 2 to 5 mils in thickness. Paper sheets are secured to and cover the outer surfaces of the steel foil; and these sheets have transparent plastic covers secured thereover. The panel has an overall thickness of less than 0.1" and weighs less than one pound per square foot--e.g. approximately 7 oz./sq. ft. The edges of the panel are covered by strips of molding to prevent injury from the sharp edges of the steel foil and to prevent damage to the panel. Magnetically-backed symbols are releasably attachable to the plastic cover layers, which also are adapted to have erasable graphics marked thereon by liquid crayon or the like.Type: GrantFiled: June 20, 1984Date of Patent: April 22, 1986Inventor: Wallace A. Krapf
-
Patent number: 4578308Abstract: A laminated board lined with thermally and electrically conductive material, which comprises:(a) a prepreg sheet formed of an alumina paper made from a mixture of alumina fibril, as the principal component, having a fiber diameter of 100 microns or smaller and a fiber length which is ten times or more as long as the fiber diameter, and microfibrillar organic fiber as a binding agent, and a thermosetting resin; and(b) an electrically conductive material in foil such as copper or aluminum bonded to said prepreg sheet.Type: GrantFiled: September 6, 1984Date of Patent: March 25, 1986Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kiyoshi Hani, Takako Takei, Minekazu Kodama, Toshiyuki Sugano
-
Patent number: 4567100Abstract: A laminar system for constructing doors and window shutters, to harden the nside of walls and to greatly increase the penetration resistance of structures. The sketch illustrates the material system and gives representative material thicknesses. The laminar system comprises an outer steel sheet, hardwood, polycarbonate plastic, a ballistic resistant (hardened steel) sheet, and an inner sheet of steel; the materials are laminated in the order given from the outside (attack side) to the inside. This laminar materials systems (used as a 3 foot wide by 7 foot high door, for example) provides greater penetration and ballistic resistance with lighter weight than prior systems.Type: GrantFiled: August 22, 1983Date of Patent: January 28, 1986Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy L. Pickett, Gary R. Cook
-
Patent number: 4567098Abstract: Metallized paper whose metal layer has been deposited by evaporation in vacuo onto a cast-coated paper. The cast coating contains mineral pigments, latex binders and conventional additives, and at least 5 parts by weight of the pigment are a synthetic polymer pigment. The coating material has a pH value >7 and during the process of fabricating the metallized paper it is deposited in such an amount that, after the drying, 10-30 g/m.sup.2 of cast coating are present. The coating material deposited onto a paper web is dried until its moisture content is 5-15% and the web is then pressed with the coated paper surface against a drum with a highly polished surface at a temperature of 100.degree.-160.degree. C. by means of a roll with a nip >1000 N/cm.Type: GrantFiled: July 6, 1983Date of Patent: January 28, 1986Assignee: Zanders Feinpaiere AGInventors: Franz-Josef Becker, Erich Hubner, Walter Lammerich
-
Patent number: 4540628Abstract: A composite sheet susceptible to having a water base ink applied by an ink jet printing system is provided. The sheet includes a non-absorbent substrate, such as aluminum on to which is applied a coating of hydroxypropyl cellulose dissolved in an organic solvent and containing a suitable flatting agent such as finely divided amorphous silica. The coating is applied in a thickness in the range of 3 to 25 microns. The method of preparing the composite sheet is also disclosed.Type: GrantFiled: September 30, 1982Date of Patent: September 10, 1985Assignee: John R. KozaInventors: Martin K. Oberdeck, John R. Koza
-
Patent number: 4529663Abstract: Non-asbestos flexible sheet material suitable for use in gaskets for the cylinder head of an internal combustion engine is made by dewatering on a water-permeable conveyor a layer of aqueous slurry and compressing and drying the dewatered layer, the aqueous slurry employed being one that contains the following ingredients in the following proportions by dry weight:______________________________________ ball clay 25-44% calcium silicate of high specific 15-40% surface area cellulose fibres 3-15% organic polymer binder 5-15% fibrillated poly (aromatic amide) 1-15% fibres ______________________________________Type: GrantFiled: April 19, 1984Date of Patent: July 16, 1985Assignee: T&N Materials Research LimitedInventors: Robert A. Lancaster, Noel C. McKenzie, Brian Hargreaves
-
Patent number: 4529653Abstract: Non-asbestos flexible sheet material suitable for use in gaskets for the exhaust manifold of an internal combustion engine is made by dewatering on a water-permeable conveyor a layer of aqueous slurry and compressing and drying the dewatered layer, the aqueous slurry employed being one that contains the following ingredients in the following proportions by dry weight:ball clay: 25-44%non-fibrous layer silicate: 25-40%graphite: 10-30%cellulose fibres: 3-15%synthetic rubber: 1-10%starch: 1-5%.Type: GrantFiled: November 7, 1983Date of Patent: July 16, 1985Assignee: T&N Materials Research LimitedInventors: Brian Hargreaves, Robert A. Lancaster, Noel C. McKenzie, John D. Crabtree
-
Patent number: 4529662Abstract: Non-asbestos flexible sheet material suitable for use in the manufacture of spiral wound gaskets is made by dewatering on a water-permeable conveyor a layer of aqueous slurry and compressing and drying the dewatered layer, the aqueous slurry employed being one that contains the following ingredients in the following proportions by dry weight:china clay 20-50%mica or chlorite 20-50%graphite 10-40%cellulose fibres 2-10%vitreous fibre in wool form 2-10%synthetic organic polymer binder 2-10%.Type: GrantFiled: November 10, 1983Date of Patent: July 16, 1985Assignee: T&N Materials Research LimitedInventors: Robert A. Lancaster, Noel C. McKenzie, Brian Hargreaves
-
Patent number: 4528234Abstract: A transparent laminate is disclosed, which laminate comprises a transparent plastic resin film or sheet substrate (A), a thin layer (B) of at least one metal such as aluminium, tin, iron, zinc, or magnesium formed on the film or sheet substrate (A) by vacuum deposition or sputtering, and a carboxyl group-containing polyolefin layer (C) formed on the metal layer (B) by lamination. In one embodiment, the film or sheet substrate may have a silicon oxide or titanium oxide layer (D) formed thereon by vacuum deposition or sputtering of the oxide.Type: GrantFiled: December 27, 1982Date of Patent: July 9, 1985Assignee: Toyo Ink Manufacturing Co., Ltd.Inventors: Keisuke Kaiho, Hidetoshi Nagata
-
Patent number: 4522887Abstract: This invention provides a laminated film prepared by laminating at least one surface of a biaxially oriented polypropylene film (A) with an olefin polymer film (B) containing from 10 to 50% by weight of an ethylene component and the balance mainly comprising a propylene component, said olefin polymer film (B) having at least three peaks in the melting curve within the range of from 120.degree. to 165.degree. C. and a surface roughness Ra of from 0.2 to 1.5.mu., said laminated film being excellent in delustering quality, light transmittance, retention of delustering quality under heat and pressure, adhesion to metallized layers and to paper.This invention further provides a laminated film prepared by laminating a polymer film (C) containing from 1 to 40% by weight of an ethylene component and the balance mainly comprising a propylene component and having one or two melting peaks within the range of from 100.degree. to 165.degree. C. and a surface roughness Ra of below 0.15.mu.Type: GrantFiled: March 19, 1984Date of Patent: June 11, 1985Assignee: Toray Industries, Inc.Inventors: Mamoru Koebisu, Masayuki Shinzawa, Masatsugi Murakami
-
Patent number: 4521492Abstract: A light refractive coated paperboard is provided comprising a normally oil and grease permeable substrate, a non-leafing silver-colored ink layer applied to one surface of said substrate and a highly pigmented (titanium dioxide) ink layer superimposed on said non-leafing silver colored ink layer and possibly a clear lacquer or varnish layer superimposed on the TiO.sub.2 containing ink layer. The above order of coating layers produces a somewhat flat appearance; for producing a more metallic look the order of the silver-colored ink layer and of the highly pigmented (TiO.sub.2) layer are reversed. The light refractive coated paperboard conceals, from the outer surface of a package made therefrom, oil and grease stains which have penetrated the inner surface of the package. A method of making such light refractive coated paperboard is also disclosed.Type: GrantFiled: April 5, 1982Date of Patent: June 4, 1985Assignee: Champion International CorporationInventor: Robert L. Allen
-
Patent number: 4520057Abstract: A composite plate including a core plate, and top surface and bottom surface metallic plates which are folded to enclose the core plate to provide an airtight seal to the core plate. The composite plate has particular utility for use as a structural plate, such as floor plate, ceiling plate, etc.Type: GrantFiled: December 22, 1983Date of Patent: May 28, 1985Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Koshii & Co., Ltd.Inventors: Hideichi Fujii, Chiyoki Yamane, Fumio Kawai
-
Patent number: 4511611Abstract: The present invention relates to improved liner constructions, and accordingly provides a cable sleeve liner capable in use of being wrapped around a cable splice and preferably having sufficient rigidity to provide an inner support for a heat-recoverable sleeve to be shrunk thereover, the liner comprising a laminate having at least one layer of fibrous sheet material and a metal layer which is substantially impermeable to moisture vapor and has one of its major surfaces facing away from all fibrous sheet layers which may be present. Preferably the fibrous layer(s) is or are arranged between the metal layer and a microperforated first layer of flexible polymeric film material which is permeable to gases or vapors generated within the laminate during recovery of the sleeve.Type: GrantFiled: December 20, 1983Date of Patent: April 16, 1985Assignee: N.V. Raychem S.A.Inventor: Marc F. L. Moisson
-
Patent number: 4507339Abstract: A metal container comprising a seamless body and an end wall integral therewith and having on at least its interior surface a protective coating which is the reaction product of a citric acid ester utilized as a lubricant in forming the container and an after-applied synthetic resin.Type: GrantFiled: November 14, 1983Date of Patent: March 26, 1985Assignee: American Can CompanyInventors: Adelaida L. Carbo, Raymond H. Good, Richard J. Karas
-
Patent number: 4504550Abstract: A combination of two mutually-adherent laminae is applied to the removable fixing of display or decorative material. A first lamina of PVC is a component of a tri-laminate, including an aluminum foil intermediate layer and a paper backing layer. The backing layer allows the tri-laminate to be secured to a display board or wall, for example using a wallpaper type paste. The display or decorative material is in the form of a sheet, which is laminated using an adhesive to the front surface of a second lamina of polyester terephthalate. When said bi-laminate is pressed into intimate surface contact with the exposed front surface of the lamina it adheres strongly thereto, but can readily be peeled off and replaced when this is required.Type: GrantFiled: July 8, 1983Date of Patent: March 12, 1985Assignee: James Frederick John JohnsonInventor: Harold W. M. Pook
-
Patent number: 4501787Abstract: A prepreg useful in flame resistant copper clad printed circuit boards is made by impregnating a porous substrate with an impregnant containing: either a prebrominated epoxy resin or a mixture of a non-halogenated epoxy resin and flame retarding additive containing bromine, and phenolic hydroxyl groups. A phenolic novolac oligomer having an average of over 2.5 phenolic hydroxyl groups per oligomeric unit is used as curing agent. Optionally, a suitable catalyst may be included. The impregnated substrate is heated to cure or advance the resin to the "B"-stage.Type: GrantFiled: April 29, 1983Date of Patent: February 26, 1985Assignee: Westinghouse Electric Corp.Inventors: Joseph R. Marchetti, Wilbur R. Thomas
-
Patent number: 4499145Abstract: A metal-clad laminate comprising a base plate composed of a plurality of electrically insulating material layers and a metal foil or foils laminated on one side or both sides of the base plate, characterized in that to at least the metal foil or foils is laminated an electrically insulating material layer composed of a silane-modified polyethylene resin sheet, that to the silane-modified polyethylene resin is laminated an electrically insulating material layer made of a paper or cloth containing an epoxy resin and/or a silanol condensation catalyst, and that the layer made of a paper or cloth contains 5 to 35% by weight of an epoxy resin and/or that to the layer made of a paper or cloth is laminated an electrically insulating material layer other than the above-mentioned two layers. Said metal-clad laminate has excellent characteristics such as low, .epsilon., low tan .delta. and excellent moisture-resistant insulating property.Type: GrantFiled: March 29, 1983Date of Patent: February 12, 1985Assignee: Sumitomo Bakelite Company LimitedInventors: Tomomi Yanagida, Mitunori Ajiki, Shigeru Suzuki
-
Patent number: 4486505Abstract: A flame retarded copper clad laminate is provided comprising a plurality of paper substrate layers each impregnated with a halogen-containing unsaturated polyester resin containing about 1% to about 30% by weight of a basic filler, and a copper cladding adhesively bonded onto at least one side of the laminate.Type: GrantFiled: November 15, 1982Date of Patent: December 4, 1984Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Yasuo Fushiki, Masayuki Oizumi, Masaharu Abe, Makoto Watanabe
-
Patent number: 4486486Abstract: A radiographic image conversion screen comprising a support, a first fluorescent layer formed on the support and consisting essentially of a blue emitting phosphor and a second fluorescent layer formed on the first fluorescent layer and consisting essentially of a green emitting rare earth oxysulfide phosphor. The green emitting rare earth oxysulfide phosphor is represented by the formula: (Ln.sub.1-i, Y.sub.i, Tb.sub.a, R.sub.b).sub.2 O.sub.2 S where Ln is at least one element selected from the group consisting of La, Gd and Lu, R is at least one element selected from the group consisting of Dy, Pr, Yb and Nd, and i, a and b are numbers within the ranges of 0.ltoreq.i.ltoreq.0.35, 0.0005.ltoreq.a.ltoreq.0.09 and 0.0002.ltoreq.b.ltoreq.0.01, respectively.Type: GrantFiled: September 30, 1982Date of Patent: December 4, 1984Assignee: Kasei Optonix, Ltd.Inventors: Hidehiko Maeoka, Etsuo Shimizu, Yujiro Suzuki, Keiji Shimiya, Norio Miura
-
Patent number: 4483902Abstract: A record carrier is formed with a substrate, a lacquer layer, and a metallic layer, with the lacquer layer containing from 0.5 to 5 percent by weight of fine particles of calcium carbonate.Type: GrantFiled: October 31, 1980Date of Patent: November 20, 1984Assignee: International Business Machines CorporationInventors: Dietrich J. Bahr, Marian Briska
-
Patent number: 4482596Abstract: A structure having a catalytic surface plated with an autocatalytic electroless alloy of copper, a metal selected from nickel, cobalt, mixtures thereof and phosphorous.Type: GrantFiled: August 25, 1982Date of Patent: November 13, 1984Assignee: Shipley Company Inc.Inventors: Michael Gulla, Oleh B. Dutkewych
-
Patent number: 4463055Abstract: A reflective film suitable for reflecting light and radio frequency energy includes a thin annealed metal foil affixed to a polymeric carrier layer or substrate wherein the polymeric carrier is thicker than the metal foil so that the foil tends to assume the physical properties, and particularly the elongation of the carrier without rupture or surface cracking of the foil upon stretching. In this manner, the polymer-metal foil laminate can be substantially deformed and stretched to fit complex shapes while maintaining a continuous, 100% reflective foil layer. The elasticity and yield strength of the substrate are selected to permit the combined foil and substrate to be stretched to fit complex shapes.Type: GrantFiled: April 27, 1983Date of Patent: July 31, 1984Inventor: Marvin P. Hodges
-
Patent number: 4452945Abstract: Coating compositions capable of curing at or near to room temperature comprise 90-50% by weight of a specified hydroxyl group-containing addition polymer, 10-50% by weight of an alkylated melamine-formaldehyde crosslinking agent and an acid catalyst consisting of a blend of a C.sub.1-4 alkylated arylsulphonic acid and a C.sub.8-14 alkylated arylsulphonic acid in amounts such that the --SO.sub.3 H group content is 0.70-2.1% of the total weight of the addition polymer and the crosslinking agent. The compositions are particularly suitable for the refinishing of automobile bodies.Type: GrantFiled: April 26, 1982Date of Patent: June 5, 1984Assignee: Imperial Chemical Industries PLCInventors: Thomas N. E. Bowen, Peter Butler, Auguste L. L. Palluel
-
Patent number: 4452843Abstract: Security papers with luminescing authenticity characteristics built in or printed thereon which absorb in the visible region of the optical spectrum but in the infrared have a transparent region in which the luminophore also emits. By the absorption in the visible undesired parasitic emissions are suppressed which would make the luminophore visually evident on corresponding excitation. For testing the authenticity of the document the emission is investigated in the infrared. Suitable luminophores are rare earth metal luminophores in suitable host lattices, particularly in ferrite lattices or garnet lattices, which contain transition metal ions as absorbing elements.Type: GrantFiled: October 23, 1981Date of Patent: June 5, 1984Assignee: GAO Gesellschaft fur Automation und Organisation mbH.Inventors: Wittich Kaule, Gerhard Schwenk, Gerhard Stenzel
-
Patent number: 4451521Abstract: Security paper with luminescing authenticity characteristics which after excitation with invisible light emit exclusively invisible light of different wavelengths as authenticity signal. The luminophores can be included in the printing ink used or they can be added to the paper material in the manufacture of the paper material. A corresponding test apparatus makes it possible to check the authenticity of the security paper in the presence of customers but unnoticed by them; thereby the invisibility of the test signal and the authenticity signal are taken advantage of and the test device is hidden behind a plate non-transmissive for visible light which however is transmissive for the test signal and for the authenticity signal.Type: GrantFiled: October 23, 1981Date of Patent: May 29, 1984Assignee: Gao Gesellschaft fur Automation und Organisation mbHInventors: Wittich Kaule, Gerhard Stenzel
-
Patent number: 4451530Abstract: Security papers with luminescing authenticity features worked into them or printed on them. The authenticity features used consist of a luminophore and one or more absorbing materials by which the emission and/or the excitation spectrum of the luminophore is changed in detectable fashion. The dyestuff can be present as an admixture to the luminophore, as a coating of a luminophore layer or as a coating on luminophore powder grains. For checking the authenticity of documents the emission spectrum of the luminophore is not used but the change generated by the technology used in the emission or excitation spectra.Type: GrantFiled: October 23, 1981Date of Patent: May 29, 1984Assignee: GAO Gesellschaft fur Automation und Organisation mbH.Inventors: Wittich Kaule, Gerhard Schwenk, Gerhard Stenzel
-
Patent number: 4448843Abstract: A magnetic recording medium is described wherein a layer comprising mainly a polyurethane resin, vinylidene chloride copolymer, or a cellulose derivative is formed on the surface of a vapor-deposited ferromagnetic metal layer on a substrate.Type: GrantFiled: April 10, 1981Date of Patent: May 15, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasuyuki Yamada, Ryuji Shirahata, Akio Yanai, Tatsuji Kitamoto
-
Patent number: 4447492Abstract: Electrically conductive articles which comprise a non-conductive substrate having thereon a substantially uniform, electrically conductive dispersion of finely divided particles of ferroalloys, silicon alloys, or mixtures thereof, are described. The articles are useful as components of electrical switches, contacts, connectors, circuit boards or electromagnetic interference shields. The conductive portion of the article may be subsequently electroplated or electrostatically painted.Type: GrantFiled: August 7, 1981Date of Patent: May 8, 1984Assignee: Occidental Chemical CorporationInventor: James P. McKaveney
-
Patent number: 4446188Abstract: A layered clad laminate with universal center plane adapted for the manufacture of printed wiring board comprising an electrically conductive self-sustaining, integral metal center sheet having, in repetitive fashion, a series of predetermined patterns of punched or photochemically developed openings therein, said sheet being pressed between electrical insulating layers of resin impregnated reinforcing material, said layers being adhered to said sheet and to each other through said openings, and on each of the outer surfaces of said laminate and adhered thereto a layer of electrically conductive metal foil which is essentially uniform and imperforate.Type: GrantFiled: December 20, 1979Date of Patent: May 1, 1984Assignee: The Mica CorporationInventors: Harshad K. Patel, Andjelko Illick
-
Patent number: 4446204Abstract: Security paper with authenticity characteristics embodied therein or printed thereon which are both ferrimagnetic and also only slightly absorbed in the infrared spectral region.The presence of both properties at the same position on the security paper is tested, wherein both tests can preferably be carried out simultaneously. Materials which show this rare combination of properties are some ferrites, ferrimagnetic garnet compounds and the so-called green ferromagnetic compounds.Type: GrantFiled: October 23, 1981Date of Patent: May 1, 1984Assignee: GAO Gesellschaft fur Automation und Organisation mbH.Inventors: Wittich Kaule, Gerhard Schwenk, Gerhard Stenzel
-
Patent number: RE32759Abstract: A backup material for small bore drilling in hard .[.crystalline.]. materials, such as multilayer circuit boards containing polyimide/glass, polyimide kevlar or modified epoxy BT/glass, includes at least one layer of hard crystalline material. Standard LCOA material with an additional layer selected from the group comprising polyimides, fluorocarbons and high temperature polycarbonates has proven successful.Type: GrantFiled: March 4, 1987Date of Patent: October 4, 1988Assignee: Control Data CorporationInventor: Russell C. Eidal